Yes. If that 512 mv was stable my rotation measurement would be simple. 
There are 360 degrees + an additional 90 degrees of overlap to report.

John Ferrell    W8CCW

"All that is necessary for the triumph of evil is for good men to do 
nothing." -- Edmund Burke
http://DixieNC.US

----- Original Message ----- 
From: "Jinx" <joecolquitt@clear.net.nz>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Wednesday, May 07, 2008 1:50 AM
Subject: Re: [PIC]Analog signal conditioning


>> The current requirements are likely to be damaging to the Pot
>> (500 ohms) if I simply put Vcc across it
>
> Is that true ?  5000mV/500R -> 10mA -> 50mW
>
>> I have a 4.3K resistor in series with it
>
> That would reduce your measurable voltage range from 5000mV
> to 521mV wouldn't it ?
>
>
>
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